species diversity of beneficial and pest insects in home gardens cameron, rachael, barney, puja,...
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Species Diversity of Species Diversity of Beneficial and Pest Insects Beneficial and Pest Insects
in Home Gardensin Home Gardens
Cameron, Rachael, Barney, Cameron, Rachael, Barney, Puja, Nathaniel James Johnson, Puja, Nathaniel James Johnson,
Crystal, Christie, John, and Crystal, Christie, John, and JamesJames
Atlantic Forest, BrazilAtlantic Forest, Brazil
SEE-U 2000SEE-U 2000
IntroductionIntroduction
What is the influence of plant biodiversity What is the influence of plant biodiversity in home gardens on insect populations?in home gardens on insect populations?
Agroforestry is becoming increasingly Agroforestry is becoming increasingly utilized in Pontal de Paranapanema as a utilized in Pontal de Paranapanema as a possible method of preserving possible method of preserving biodiversity.biodiversity.– This exercise explores the relationship This exercise explores the relationship
between plant diversity and insect diversity between plant diversity and insect diversity in home gardens.in home gardens.
Methodology Methodology
Three sites of varying plant Three sites of varying plant diversity were studied. diversity were studied. – Two home gardens and one forest area Two home gardens and one forest area
Two pan traps were placed at each Two pan traps were placed at each site on Sunday July 30 and collected site on Sunday July 30 and collected on Wednesday August 2. on Wednesday August 2.
Species were separated on the Species were separated on the basis of morphologybasis of morphology
SitesSites
MangoMango
MiroMiro
Not Pictured: MadeiraNot Pictured: Madeira
Results - AnalysesResults - Analyses
All statistical analyses were non-All statistical analyses were non-significant (chi-square tests)significant (chi-square tests)
Diversity indices could not be Diversity indices could not be calculated because of low within-calculated because of low within-species abundancesspecies abundances
ResultsResults
The graphs constructed were The graphs constructed were species/ samplespecies/ sample ind./sampleind./sample species/sitespecies/site ind/siteind/site plant species/siteplant species/site
Plant species/sitePlant species/site
Plant species per site
0
5
10
15
20
25
miro mango madiera
site
freq
uen
cy
Parasitoids and Homopterans found in three Home Gardens
0
1
2
3
4
5
6
7
Madiera A Madiera B Mango A Mango B Miro A Miro B
Site Samples
Nu
mber
of
Indiv
idu
als
/ s
am
ple
HomopteranParasitoid
Insect Abundance / Insect Abundance / SampleSample
Homopteran and Parasitoid Species found at three Home Gardens
0
1
2
3
4
5
6
7
MadieraA
MadieraB
Mango A Mango B Miro A Miro B
Site Samples
Num
ber
of
Specie
s / S
am
ple
HomopteranParasitoid
I
Insect Richness / SampleInsect Richness / Sample
Number of Individuals found at each Home Garden
0
1
2
3
4
5
6
7
8
9
Madiera Mango Miro
Home Garden Site
Nu
mber
of
Indiv
idu
als
/ s
ite
HomopteranParasitoid
Overall Insect AbundanceOverall Insect Abundance
Number of Species Found at each Home Garden
0
1
2
3
4
5
6
7
8
9
Madiera Mango Miro
Home Garden Site
Nu
mber
of
Specie
s / s
ite
Parasitoid
Overall Insect RichnessOverall Insect Richness
ConclusionConclusion
Species diversity of homopterans and Species diversity of homopterans and parasitoids was found to be highly parasitoids was found to be highly variable between sites.variable between sites.
Only one site had a repeated species.Only one site had a repeated species.– The site with the highest plant species The site with the highest plant species
diversity also had the highest parasitoid diversity also had the highest parasitoid diversity. This site also had the second diversity. This site also had the second highest number of homopteran species. highest number of homopteran species.
Conclusions ContinuedConclusions Continued
This study suggests a positive This study suggests a positive relationship between high plant relationship between high plant diversity and highly beneficial diversity and highly beneficial (parasitoids) insects.(parasitoids) insects.
For more conclusive results this For more conclusive results this research should be replicated.research should be replicated.